问题
计算题
简便方法计算下面各题。
|
答案
(1)2892+299
=2892+300-1
=3192-1
=3191
=(327+173)+648
=500+648
=1148
(3)6873﹣451﹣549
=6873-(451+549)
=6873-1000
=5873
=428-100+2
=328+2
=330
单项选择题 A1/A2型题
简便方法计算下面各题。
|
(1)2892+299
=2892+300-1
=3192-1
=3191
=(327+173)+648
=500+648
=1148
(3)6873﹣451﹣549
=6873-(451+549)
=6873-1000
=5873
=428-100+2
=328+2
=330